TREA

EFDYN, INC

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  • TULSA, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-adjusting shock absorber having staged metering
    • Patent number 4,284,177
    • Issue date Aug 18, 1981
    • Efdyn Corporation
    • John A. Domek
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Adjustable shock absorber
    • Patent number 4,164,274
    • Issue date Aug 14, 1979
    • Efdyn Corporation
    • Willard J. Schupner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Adjustable shock absorber
    • Patent number 4,071,122
    • Issue date Jan 31, 1978
    • Efdyn Corporation
    • Willard J. Schupner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Adjustable shock absorber unit
    • Patent number 3,998,302
    • Issue date Dec 21, 1976
    • Efdyn Corporation
    • Willard J. Schupner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Adjustable shock absorber
    • Patent number 3,997,037
    • Issue date Dec 14, 1976
    • Efdyn Corporation
    • Willard J. Schupner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Adjustable hydraulic dashpot
    • Patent number 3,990,548
    • Issue date Nov 9, 1976
    • Efdyn Corporation
    • Willard J. Schupner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Trademarklast 30 trademarks

  • Information Trademark

    72268478 - SHOK-BLOC
    • Serial number 72268478
    • Registration number 860477
    • Filing date Apr 6, 1967
    • EFDYN CORPORATION
    • 7 - Machines and machine tools